如意坊 三巷 一號 二樓 on far right of photo. The photographer was standing halfway up on the wooden straight staircase, the same staircase I climbed to visit my relatives. Note the concrete-lined ditch on the ground that drained southward. The children in the photo are now in their early 70s.
Photo source:
https://collections.lib.uwm.edu/digital/collection/agsphoto/search/searc...